A Least Squares Estimated Regression Line Has Been Fitted to a Set

question 33

Multiple Choice

A least squares estimated regression line has been fitted to a set of data and the resulting residual plot is shown. Which is true?

• A) The linear model seems appropriate.
• B) The linear model is poor because some residuals are large.
• C) The linear model is poor because there is a pattern.
• D) The plot shows a bend, thus a curved model would be more appropriate.
• E) There is one extreme outlier, a transformation of the data is recommended.

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